CVE-2026-40586— blueprintUE: Login Endpoint Has No Rate Limiting, Lockout, or Brute-Force Protection
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I. Basic Information for CVE-2026-40586
Vulnerability Information
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Vulnerability Title
blueprintUE: Login Endpoint Has No Rate Limiting, Lockout, or Brute-Force Protection
Source: NVD (National Vulnerability Database)
Vulnerability Description
blueprintUE is a tool to help Unreal Engine developers. Prior to 4.2.0, the login form handler performs no throttling of any kind. Failed authentication attempts are processed at full network speed with no IP-based rate limiting, no per-account attempt counter, no temporary lockout, no progressive delay (Tarpit), and no CAPTCHA challenge. An attacker can submit an unlimited number of credential guesses. The password policy (10+ characters, mixed case, digit, special character) reduces the effective keyspace but does not prevent dictionary attacks, credential stuffing from breached databases, or targeted attacks against known users with predictable passwords. This vulnerability is fixed in 4.2.0.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
过多认证尝试的限制不恰当
Source: NVD (National Vulnerability Database)
Vulnerability Title
blueprintUE self-hosted edition 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
blueprintUE self-hosted edition是blueprintUE开源的一个自托管的数据建模与可视化工具。 blueprintUE self-hosted edition 4.2.0之前版本存在安全漏洞，该漏洞源于登录表单处理程序未执行任何类型的限制，可能导致攻击者以全网络速度提交无限数量的凭据猜测，进行字典攻击、凭据填充或针对已知用户的定向攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| blueprintue | blueprintue-self-hosted-edition | < 4.2.0 | - |
II. Public POCs for CVE-2026-40586
| # | POC Description | Source Link | Shenlong Link |
|---|
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No public POC found.
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Same Patch Batch · blueprintue · 2026-04-21 · 4 CVEs total
| CVE-2026-40588 | 8.1 HIGH | blueprintUE: Authenticated Password Change Does Not Verify Current Password |
| CVE-2026-40585 | 7.4 HIGH | blueprintUE: Password Reset Tokens Have No Expiry Window |
| CVE-2026-40587 | 6.5 MEDIUM | blueprintUE: Active Sessions Are Not Invalidated After Password Change or Reset |
IV. Related Vulnerabilities
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V. Comments for CVE-2026-40586
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